Sun-visor extension device for vehicles



FIG. 1 is a front elevational view of the sun-visor extension device for vehicles showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a sun-visor extension device for vehicles, as sn and described. 